1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/prototype/sdr/multi1.p.glsl	Tue Sep 25 06:19:37 2012 +0300
     1.3 @@ -0,0 +1,23 @@
     1.4 +/* multipass renderer shader 1: RGB: normal */
     1.5 +
     1.6 +uniform sampler2D tex_norm;
     1.7 +
     1.8 +varying vec3 pos, norm, tang;
     1.9 +
    1.10 +void main()
    1.11 +{
    1.12 +	vec3 n = normalize(norm);
    1.13 +	vec3 t = normalize(tang);
    1.14 +	vec3 b = cross(n, t);
    1.15 +
    1.16 +	mat3 tbn_mat = mat3(
    1.17 +			t.x, t.y, t.z,
    1.18 +			b.x, b.y, b.z,
    1.19 +			n.x, n.y, n.z);
    1.20 +
    1.21 +	// grab normal from the normal map, remap it and transform it to view space
    1.22 +	n = texture2D(tex_norm, gl_TexCoord[0].st).xyz * 2.0 - 1.0;
    1.23 +	n = normalize(tbn_mat * n);
    1.24 +
    1.25 +	gl_FragColor = vec4(n, 0.0);
    1.26 +}